231312031103 has 16 divisors (see below), whose sum is σ = 234883224576. Its totient is φ = 227760812160.

The previous prime is 231312031099. The next prime is 231312031109. The reversal of 231312031103 is 301130213132.

It is a cyclic number.

It is not a de Polignac number, because 231312031103 - 2² = 231312031099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231312031109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35166551 + ... + 35173127.

It is an arithmetic number, because the mean of its divisors is an integer number (14680201536).

Almost surely, 2^231312031103 is an apocalyptic number.

231312031103 is a deficient number, since it is larger than the sum of its proper divisors (3571193473).

231312031103 is an equidigital number, since it uses as much as digits as its factorization.

231312031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231312031103 its reverse (301130213132), we get a palindrome (532442244235).

The spelling of 231312031103 in words is "two hundred thirty-one billion, three hundred twelve million, thirty-one thousand, one hundred three".